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Finding the Fourth Proportional to 52,558.40, 78,837.60 and 32,859.20

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Solution

The fourth proportional to 52,558.40, 78,837.60 and 32,859.20 is: 49,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,558.40 : 78,837.60 = 32,859.20 : x
  2. Step 2: Convert to fraction form
    52,558.40/78,837.60 = 32,859.20/x
  3. Step 3: Cross multiply
    52,558.40x = 78,837.60 × 32,859.20
  4. Step 4: Simplify right side
    52,558.40x = 2,590,540,465.92
  5. Step 5: Solve for x
    x = 2,590,540,465.92/52,558.40
  6. Step 6: Final answer
    x = 49,288.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.